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rpm command

RedHat / CentOS Install and Configure Cacti Network Graphing Tool

Cacti is a network graphing tool similar to MRTG. How do I install and configure common options to collect SNMP data and various other data (such as system load, network link status, hard disk space, logged in users etc) into an RRD?
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Sysadmin because even developers need heroes!!!

Linux Determine which Services are Enabled at Boot

The best protection against vulnerable software is running less software. How do I find out which services are enabled at Boot under CentOS / RHEL / Fedora Linux? How do I disable software which is not needed?
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yum Download All Source Packages (SRPM) From RedHat / CentOS WebSite

How can I use yum to download source packages instead of manually downloading every single package from RHN / CentOS / RedHat Ftp website?
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Find Out If Patch Number ( CVE ) Has Been Applied To RHEL / CentOS Linux

I know how to update my system using the yum command. But, how can I find out that patch has been applied to a package? How do I search CVE patch number applied to a package under a Red Hat Enterprise Linux/CentOS/RHEL/Fedora Linux based system?
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How do I enable EPEL (Extra Packages for Enterprise Linux) repo and install the packages under a RHEL / CentOS Linux server system?
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View Installation / Uninstallation Script Inside The RPM File

Q. How do I view the pre / post installation or uninstallation script inside the RPM file called foo.rpm under Red Hat Enterprise Linux / RHEL / CentOS / Fedora / Suse Linux? How do I list the package specific scriptlet(s) that are used as part of the installation and uninstallation processes?
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Linux Delete / Uninstall Software

How do I uninstall or delete installed software under Linux operating systems?
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Linux Detecting: Second CPU / Processor

Q. I’ve single CPU server system. If another CPU is added to my server, will CentOS Linux recognize it automatically on the next boot? Do I need to configure something?
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Explain: Red Hat Linux RPM Relocatable and Not Relocatable Packages

Q. Can you explain CentOS / RHEL / Fedora Linux relocatable package concept?
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Debian / Ubuntu Linux: Find Out What Package Provides a File

How do I find out what package provides a file called /bin/ls? I use the rpm -qf /bin/ls command under Red Hat Enterprise Linux to find out package name. Can you tell me equivalent command for the same under Debian or Ubuntu Linux?
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